The recommended type of wheel weight to use on aluminum (alloy) wheels is ___________
A) Coated (painted) or stick-on lead weights B) Lead weights with longer than normal clips
C) Aluminum weights D) Lead with plated spring steel clips
A
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A heat pump defrost control must do three things: Turn on auxiliary heat, turn off the condensor fan motor, and:
A) Turn off the indoor blower fan B) Shift the reversing valve from heat to cool C) Turn off the compressor D) Deactivate the thermostat
Grit chambers are used to
a. digest organic solids in sewage sludge b. reduce primary wastewater effluent BOD levels c. remove suspended solids that may damage equipment d. remove colloidal solids that cannot be removed by sedimentation e. none of the above
A rope grab and self-retracting lifeline are two common _____ devices
A) anchorage B) deceleration C) lanyard D) rescue
A wye-delta transformer has a turns ratio of 2:1. It has a secondary line voltage of 480 V. The secondary is connected to a wye-connected three-phase resistive load of 50 ? in each phase. What is the primary phase current?
A. 1.6 A B. 1.924 A C. 2.77 A D. 3.2 A